<template>
    <scroll-view scroll-y class="viewport">
      <!-- 基本信息 -->
      <view class="goods">
        <!-- 商品主图 -->
        <view class="preview">
          <swiper circular @change="onChange">
            <swiper-item v-for="item,index in goodDetail?.mainPictures" :key="index">
              <image mode="aspectFill" @tap="onTapImage(item)" :src="item"/>
            </swiper-item>
          </swiper>
          <view class="indicator">
            <text class="current">{{activeIndex+1}}</text>
            <text class="split">/</text>
            <text class="total">{{goodDetail?.mainPictures.length}}</text>
          </view>
        </view>
  
        <!-- 商品简介 -->
        <view class="meta">
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{goodDetail?.price}}</text>
          </view>
          <view class="name ellipsis">{{goodDetail?.name}}</view>
          <view class="desc">{{goodDetail?.desc}}</view>
        </view>
  
        <!-- 操作面板 -->
        <view class="action">
          <view class="item arrow" @tap="openPopup('goodsSku')">
            <text class="label">选择</text>
            <text class="text ellipsis">{{goodSkuInfo == ''?'请选择商品规格':goodSkuInfo}}</text>
          </view>
          <view class="item arrow" @tap="openPopup('address')">
            <text class="label">送至</text>
            <text class="text ellipsis">{{addressInfo==''?'请选择收货地址':addressInfo}}</text>
          </view>
          <view class="item arrow" @tap="openPopup('service')">
            <text class="label">服务</text>
            <text class="text ellipsis"> 无忧退 快速退款 免费包邮 </text>
          </view>
        </view>
      </view>
  
      <!-- 商品详情 -->
      <view class="detail panel">
        <view class="title">
          <text>详情</text>
        </view>
        <view class="content">
          <view class="properties">
            <!-- 属性详情 -->
            <view class="item" v-for="item,index in goodDetail?.details.properties" :key="index">
              <text class="label">{{item.name}}</text>
              <text class="value">{{item.value}}</text>
            </view>
          </view>
          <!-- 图片详情 -->
          <image mode="widthFix" v-for="item,index in goodDetail?.details.pictures" :key="index" :src="item"></image>
        </view>
      </view>
      <!-- 同类推荐 -->
      <view class="similar panel">
        <view class="title">
          <text>同类推荐</text>
        </view>
        <view class="content">
          <navigator
            v-for="item in goodDetail?.similarProducts"
            :key="item.id"
            class="goods"
            hover-class="none"
            :url="`/pages/goods/goods?id=${item.id}`"
          >
            <image class="image" mode="aspectFill" :src="item.picture"></image>
            <view class="name ellipsis">{{item.name}}</view>
            <view class="price">
              <text class="symbol">¥</text>
              <text class="number">{{item.price}}</text>
            </view>
          </navigator>
        </view>
      </view>
    </scroll-view>
  
    <!-- 用户操作部分 -->
    <view class="toolbar" :style="{ paddingBottom: safeAreaInsets?.bottom + 'px' }">
        <view class="icons">
        <button class="icons-button"><text class="icon-heart"></text>收藏</button>
        <button class="icons-button" open-type="contact">
            <text class="icon-handset"></text>客服
        </button>
        <navigator class="icons-button" url="/pages/cart/shoppingCart">
            <text class="icon-cart"></text>购物车
        </navigator>
        </view>
        <view class="buttons">
        <view class="addcart" @tap="addCart_btn"> 加入购物车 </view>
        <view class="buynow" @tap="buynow_btn"> 立即购买 </view>
        </view>
    </view>

    <!-- uni-ui 弹出层 -->
    <uni-popup ref="popup" type="bottom" background-color="#fff">
      <scroll-view scroll-y>
        <ServicePanel v-if="popupName == 'service'" @close="popup.close()"></ServicePanel>
        <AddressPanel v-if="popupName == 'address'" @sendAddressInfo="getAddressInfo" @close="popup.close()"></AddressPanel>
        <GoodsSku v-if="popupName == 'goodsSku'" :goodDetail="goodDetail" @sendGoodSkuInfo="getGoodSkuInfo" @close="popup.close()"></GoodsSku>
      </scroll-view>  
    </uni-popup>
</template>

<script setup lang="ts">
import { ref } from "vue";
import { onLoad } from "@dcloudio/uni-app";
//@ts-ignore,引入请求函数
import { reqGoodsDetail } from "@/services/goods.ts";
//@ts-ignore,引入ts类型约束
import type { goodsDetailResponse } from "@/types/goods";
//引入uni-ui弹出层所需要组件
import ServicePanel from "./ServicePanel.vue";
import AddressPanel from "./AddressPanel.vue";
import GoodsSku from "./GoodsSku.vue";

//获取页面参数:商品id
const props = defineProps(['id']);
//uni生命周期
onLoad(()=>{
    //获取当前商品详情
    getGoodsDetail();
})
//获取屏幕边界到安全区域的距离
const { safeAreaInsets } = uni.getSystemInfoSync()

//当前商品详情信息
let goodDetail = ref<goodsDetailResponse>();
//当前轮播图索引
let activeIndex = ref(0);
//uni-ui弹出层组件实例
let popup = ref();
//uni-ui弹出层条件渲染哪个组件
const popupName = ref<'address' | 'service' | 'goodsSku'>();

//popup弹出层选择好的地址信息、商品规格信息展示
let addressInfo = ref('');
let goodSkuInfo = ref('');

//获取商品详情
const getGoodsDetail = async () => {
    let res = await reqGoodsDetail(props.id);
    goodDetail.value = res.result;
    console.log('商品详情api',res);
}
//商品轮播图change事件
const onChange = (ev:any) => {
  activeIndex.value = ev.detail?.current;
}
//轮播图点击事件：图片放大展示
const onTapImage = (imageUrl:string) => {
  //进行大图预览
  uni.previewImage({
    current:imageUrl,
    urls:goodDetail.value!.mainPictures
  })
}
//uni-ui更改要渲染的组件
const openPopup = (name:typeof popupName.value) => {
  //修改弹出层名称
  popupName.value = name;
  popup.value?.open();  //打开弹出层
}
//给popup弹出层子组件绑定的事件，获取选择商品规格信息、收货地址信息
const getAddressInfo = (str:string) => {
  addressInfo.value = str;
}
const getGoodSkuInfo = (str:string) => {
  goodSkuInfo.value = str;
}
//加入购物车与立即购买按钮
const addCart_btn = () => {
  if(goodSkuInfo.value == ""){
    uni.showToast({icon:"error",title:"请选择商品规格!"});
  }
}
const buynow_btn = () => {
  if(goodSkuInfo.value == ""){
    uni.showToast({icon:"error",title:"请选择商品规格!"});
  }
}

</script>

<style lang="scss" scoped>
page {
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.viewport {
  background-color: #f4f4f4;
}

.panel {
  margin-top: 20rpx;
  background-color: #fff;
  .title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90rpx;
    line-height: 1;
    padding: 30rpx 60rpx 30rpx 6rpx;
    position: relative;
    text {
      padding-left: 10rpx;
      font-size: 28rpx;
      color: #333;
      font-weight: 600;
      border-left: 4rpx solid #27ba9b;
    }
    navigator {
      font-size: 24rpx;
      color: #666;
    }
  }
}

.arrow {
  &::after {
    position: absolute;
    top: 50%;
    right: 30rpx;
    content: '\e6c2';
    color: #ccc;
    font-family: 'erabbit' !important;
    font-size: 32rpx;
    transform: translateY(-50%);
  }
}

/* 商品信息 */
.goods {
  background-color: #fff;
  .preview {
    height: 750rpx;
    position: relative;
    .image {
      width: 750rpx;
      height: 750rpx;
    }
    .indicator {
      height: 40rpx;
      padding: 0 24rpx;
      line-height: 40rpx;
      border-radius: 30rpx;
      color: #fff;
      font-family: Arial, Helvetica, sans-serif;
      background-color: rgba(0, 0, 0, 0.3);
      position: absolute;
      bottom: 30rpx;
      right: 30rpx;
      .current {
        font-size: 26rpx;
      }
      .split {
        font-size: 24rpx;
        margin: 0 1rpx 0 2rpx;
      }
      .total {
        font-size: 24rpx;
      }
    }
  }
  .meta {
    position: relative;
    border-bottom: 1rpx solid #eaeaea;
    .price {
      height: 130rpx;
      padding: 25rpx 30rpx 0;
      color: #fff;
      font-size: 34rpx;
      box-sizing: border-box;
      background-color: #35c8a9;
    }
    .number {
      font-size: 56rpx;
    }
    .brand {
      width: 160rpx;
      height: 80rpx;
      overflow: hidden;
      position: absolute;
      top: 26rpx;
      right: 30rpx;
    }
    .name {
      max-height: 88rpx;
      line-height: 1.4;
      margin: 20rpx;
      font-size: 32rpx;
      color: #333;
    }
    .desc {
      line-height: 1;
      padding: 0 20rpx 30rpx;
      font-size: 24rpx;
      color: #cf4444;
    }
  }
  .action {
    padding-left: 20rpx;
    .item {
      height: 90rpx;
      padding-right: 60rpx;
      border-bottom: 1rpx solid #eaeaea;
      font-size: 26rpx;
      color: #333;
      position: relative;
      display: flex;
      align-items: center;
      &:last-child {
        border-bottom: 0 none;
      }
    }
    .label {
      width: 60rpx;
      color: #898b94;
      margin: 0 16rpx 0 10rpx;
    }
    .text {
      flex: 1;
      -webkit-line-clamp: 1;
    }
  }
}

/* 商品详情 */
.detail {
  padding-left: 20rpx;
  .content {
    margin-left: -20rpx;
    .image {
      width: 100%;
    }
  }
  .properties {
    padding: 0 20rpx;
    margin-bottom: 30rpx;
    .item {
      display: flex;
      line-height: 2;
      padding: 10rpx;
      font-size: 26rpx;
      color: #333;
      border-bottom: 1rpx dashed #ccc;
    }
    .label {
      width: 200rpx;
    }
    .value {
      flex: 1;
    }
  }
}

/* 同类推荐 */
.similar {
  .content {
    padding: 0 20rpx 200rpx;
    background-color: #f4f4f4;
    display: flex;
    flex-wrap: wrap;
    .goods {
      width: 340rpx;
      padding: 24rpx 20rpx 20rpx;
      margin: 20rpx 7rpx;
      border-radius: 10rpx;
      background-color: #fff;
    }
    .image {
      width: 300rpx;
      height: 260rpx;
    }
    .name {
      height: 80rpx;
      margin: 10rpx 0;
      font-size: 26rpx;
      color: #262626;
    }
    .price {
      line-height: 1;
      font-size: 20rpx;
      color: #cf4444;
    }
    .number {
      font-size: 26rpx;
      margin-left: 2rpx;
    }
  }
  navigator {
    &:nth-child(even) {
      margin-right: 0;
    }
  }
}

/* 底部工具栏 */
.toolbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  background-color: #fff;
  height: 100rpx;
  padding: 0 20rpx var(--window-bottom);
  border-top: 1rpx solid #eaeaea;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: content-box;
  .buttons {
    display: flex;
    & > view {
      width: 220rpx;
      text-align: center;
      line-height: 72rpx;
      font-size: 26rpx;
      color: #fff;
      border-radius: 72rpx;
    }
    .addcart {
      background-color: #ffa868;
    }
    .buynow,
    .payment {
      background-color: #27ba9b;
      margin-left: 20rpx;
    }
  }
  .icons {
    padding-right: 10rpx;
    display: flex;
    align-items: center;
    flex: 1;
    .icons-button {
      flex: 1;
      text-align: center;
      line-height: 1.4;
      padding: 0;
      margin: 0;
      border-radius: 0;
      font-size: 20rpx;
      color: #333;
      background-color: #fff;
      &::after {
        border: none;
      }
    }
    text {
      display: block;
      font-size: 34rpx;
    }
  }
}
</style>